Gneiss
Gneiss
metamorphic
Category
Igneous, Metamorphic, And Sedimentary
Browse igneous, metamorphic, and sedimentary specimens identified by the Rock Identifier community.
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Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Gneiss
Gneiss
metamorphic
River Stone (River Pebble)
River Stone (Composition: primarily Quartzite, Chalcedony, and silicate minerals)
sedimentary
Garnet in Host Rock
Garnet Group (A3B2(SiO4)3)
metamorphic
Schist
Chlorite/Mica Schist
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
River Pebble (Gneiss/Schist mix)
Metamorphic rock aggregate
metamorphic
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
mineral
Magnetite (potentially Lodestone)
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Ruby in Zoisite
Anyolite (composite of Corundum Al2O3 and Zoisite Ca2Al3(SiO4)(Si2O7)O(OH))
metamorphic
Gneiss
Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)
metamorphic
Feldspathic Gneiss (Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Schist (Chlorite or Mica-rich)
Chlorite Schist
metamorphic
Coarse Sand or Fine Gravel
Detrital Sedimentary Fragments (mostly SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Garnet Gneiss
Gneiss containing Almandine Garnet
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic